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How can I upgrade from buster to bullseye using dvd1?

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cola
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How can I upgrade from buster to bullseye using dvd1?

#1 Post by cola »

Code: Select all

mount -o loop -t iso9660 dvd1.iso /home/user/debian11
in /etc/apt/sources.list
deb file:///home/user/debian11 bullseye main contrib
apt-get update got error:

Code: Select all

Reading package lists... Done          
E: The repository 'file:/home/user/debian11 bullseye Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
What should I do?

p.H
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Re: How can I upgrade from buster to bullseye using dvd1?

#2 Post by p.H »

Try to mount the image on /media/cdrom and use

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apt-cdrom -m add

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